MyPep vs StackTrax
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MyPep
This app helps you privately track medications, peptides, and GLP-1 protocols. Log doses, calculate reconstitutions, and visualize your progress with smart schedules and reminders. Keep your routine organized without manual tracking.
- Medication and peptide logging
- Reconstitution calculator
- Smart schedules and reminders
- Pharmacokinetic estimator
- Injection site tracker
- Dose history calendar
- Weight and progress photo logging
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MyPep is a simple, private tracker for your medications, peptides and GLP-1 protocol. Log every dose in seconds, calculate reconstitution in one place, and review your history on a clean calendar — all in an app designed for consistency, not noise. Whether you’re running a GLP-1 like Semaglutide (Ozempic, Wegovy), Tirzepatide (Mounjaro, Zepbound) or Retatrutide, or tracking a wider peptide stack (BPC-157, TB-500, Sermorelin, Ipamorelin, MT-II and more), MyPep keeps your routine organized — without spreadsheets, sticky notes or screenshots. YOUR STACK, ONE PLACE - Add every medication or peptide to your shelf with strength, brand, and a quick visual cue. - See remaining vial level at a glance with the live medication-level estimator. - Catalog of 40+ peptides and GLP-1s with pharmacokinetic data (half-life, Tmax) sourced from FDA labels and clinical trials. SMART SCHEDULES & REMINDERS - Create recurring schedules per medication (e.g. "0.5 mg Mondays, 9:00 AM"). - Toggle reminders per schedule — get a notification before each dose. - Today screen surfaces your dose to-do list for the current day. ONE-TAP DOSE LOGGING - Log a dose in seconds: medication, amount, time, injection site, notes, and pain level. - Log doses for today or backdate past doses from the calendar. - Each entry keeps a full record so you can spot patterns over time. RECONSTITUTION CALCULATOR - Take the guesswork out of mixing: peptide amount + BAC water → concentration, volume to inject, units on the syringe, syringe fill %, and doses per vial. - Built around common insulin syringe presets. PHARMACOKINETIC ESTIMATOR - Visualize estimated medication level over 24 hours, 7 days, 30 days or 90 days. - Combines your logged doses with upcoming scheduled doses so you can see where you are in your dosing window. INJECTION SITE TRACKER - Pick from anatomical sites when logging a dose. - Weekly site heatmap shows which areas you’ve used the most so you can rotate properly. DOSE HISTORY ON A CALENDAR - A clean monthly calendar with every logged and scheduled dose. - Tap any day to see what you took, when, where and at what dose. - Switch to a chronological list view for a quick scroll through your history. PROGRESS THAT YOU OWN - Log weight with kg or lbs, attach optional progress photos. - See weight trend over time on a simple chart. - Photos stay in your private library, synced to your account. SHARE YOUR STACK - Generate a clean visual card of your current stack and schedules. - Save it to Photos or share it directly — perfect for keeping notes between check-ins. PRIVATE BY DEFAULT - Sign in with Apple — no email, no password. - Your data is encrypted in transit and tied to your account, so you can pick up where you left off on any device. SUBSCRIPTION MyPep uses an auto-renewing subscription with a free trial. - Payment is charged to your Apple ID after the trial. - Renews automatically unless canceled at least 24 hours before the period ends. - Manage or cancel anytime in Apple Account Settings. IMPORTANT DISCLAIMER MyPep is for informational and personal record-keeping purposes only. It does not provide medical advice, diagnosis, treatment recommendations, or dosing instructions. Always consult a qualified healthcare professional before starting, changing, or stopping any medication or peptide protocol. Privacy Policy: https://fitles.notion.site/Privacy-Policy-35fe78937e028137a72cf227bf81a145 Terms of Use: https://fitles.notion.site/Terms-of-Service-Stack-AI-35fe78937e0281a29640e8556659d445 Support: lenzaicontact@gmail.com
StackTrax
Track peptide protocols and GLP-1 titrations with detailed logging, reminders, and injection site rotation. Access a research library and integrate with Oura for comprehensive health insights. Includes nutrition tracking and an AI protocol importer.
- Peptide and GLP-1 tracking
- Dose logging and reminders
- Injection site rotation
- Research library with compound guides
- Oura integration
- AI Protocol Importer
- Nutrition tracking
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The peptide tracker built for people who take their protocol seriously. Whether you're running BPC-157, tracking a GLP-1 titration, tracking TRT, or managing a multi-compound stack — StackTrax helps you stay consistent, never miss a dose, and see what's actually working. FREE Research library — 90+ citation-backed compound guides. FDA labels, PMIDs, or community evidence, clearly labeled. PRO (subscription, manage at stacktrax.com) Log doses across multiple compounds and stacks. Set reminders for any cadence — daily, every other day, every 3 / 4 / 5 days, twice weekly, specific weekdays, "as needed," titration phases, cycle protocols. Injection site rotation with a front / back zone map. Vial inventory and low-stock alerts. Oura integration — readiness, sleep, HRV, resting heart rate, stress, resilience. AI Protocol Importer — paste your existing protocol or upload a screenshot, and StackTrax parses it into a tracker setup. Nutrition tracking — meals, barcode scanner, macros, hydration. HOW TO USE Use the iOS app for daily tracking. Use the web to add or configure new compounds and manage your subscription. Always consult a qualified healthcare provider before starting, changing, or stopping any protocol. IMPORTANT INFORMATION StackTrax is an informational tracking and logging tool. It is not medical advice and does not prescribe, recommend, or facilitate the purchase of any medication or compound. Many compounds tracked in StackTrax (BPC-157, TB-500, MOTS-c, sermorelin, NAD+ injection, others) are not FDA-approved for human use and are legally sold in the US only as research chemicals. We provide tracking tools and informational content; we do not endorse off-label or non-approved use. Subscriptions are managed at stacktrax.com. New users get a 14-day free Pro trial; full pricing shown at signup. Terms of Use: https://stacktrax.com/terms Privacy Policy: https://stacktrax.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: StackTrax at daily against MyPep's every 6 days. StackTrax also leads on rating (5.0 vs 4.8) and iOS requirement (16.0 vs 26.0). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. MyPep sells 2 in-app purchases, starting at $9.99 per month and StackTrax sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
StackTrax holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 10 and 7 respectively.
MyPep ships an update every 6 days, StackTrax daily. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.
| Parameter | MyPep | StackTrax |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (10 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 10 — better | 7 |
| Update frequency | Every 6 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 32 MB |
| Age rating | 17+ | 17+ |
| Developer | Blazej Sawicki | Isaiah Deutsch |
Customer experience
MyPep
StackTrax
In-app purchases
MyPep
- Monthly subscription$9.991 Month
- 1 Year subscription$39.991 Year
StackTrax
- Pro Monthly14 Days trial$4.991 Month
- Pro Yearly14 Days trial$49.991 Year





